Vaporizer for internal-combustion engines.



N0- 83 7,'9 84. PATENTED DEC. 11, 1906.

J. HIVAIL. VAPORIZER FOR INTERNALGOMBUSTION ENGINES.

APPLICATION FILED MAILZS, 1904.

WITNESSES:

mm i UNI-TED srarss PATE NT OFFlUlzll.

JONATHAN H. VAIL, NORRISTOWN. PENNSYLVANIA, ASQIHNOR TO PENNSYLVANIA lRON WORKS COMPANY, OF PllILA'DELPHIA, PENN- SYLVANlA, A CORHORATION OF PENNSYLVANIA.

VAFQFHZER FOR INTERNAL-COMBUSTION ENtBlNES.

Specification of Letters Patent.

- Patented Dec. 11,1906.

, lpulicat-icn filed March 23, 1904. Serial No. 199.607.

To all whom it "Ml/y concern:

Be it known that I, JONATHAN H. VAIL, of Norristown, in the State of Pennsylvania, have invented certain new and useful Improvements in Vaporizers for Internal-Combustion Engii'ies, whereof the following is a specification, reference being had to the ac companying drawings.

My improvements relate to the arrange ment of the inlet-chamber for the vaporizer; to the collocation, adjustment, and control of the air and fuel inlet valves to the screen interposed between said two inlet-valves to air-deflectors on the air-inlet valve, and the jacketing system for the vaporizer.

In the drawings, Figure I is a central vertical section of a vaporizer embodyin my invention. Fig. II is a planview 0 the screen. Fig. III is a plan view of the air-inlet valve, showing the deflectors.

In the drawings, 1; is the inlet-olmmber casing, having the air-inlet on its under side comprising the conical seat for the "valve 2.

Said valve 2 is provided with the spindle 3, which is drew-threaded in said valve and ad justablc i om the exterior of said casing 1 to determine the extent of projection of its end 4 above said valve. Said valve 2 is provided at its top with deflecting-plates 5, which are preferably curved as shown in plan in Fig. III, so that the air;entering obiquely between the opposing surfaces of said valve 2 audits seat is distributed in the cas ing 1. The spider-frame 6, above said valve-- casingl, comprises the central tubular valvecasing provided with the conical seat 7. Said. seat 7 communicates with the passage-way 8 in one of the arms of said frame 6, through "which the liquid fuel is admitted-from the pipe 10 under control of the valve 9. The needle-valve 11 is fitted. to said seat 7 and provided with. the coiled spring 12, which abuts upon its shoulder within the adjustable cap 13, which latter is screwed into said casing above said seat, so that said valve 11 is normally maintained in the closed position shown. Said valve 11 depends above the end 4 of the valve-stem 3 and in alinemeut therewith, so that whenthe valve 2 is opened the valve 11 is also opened toan extent determined by the adjustment of said stem 3, and both air and liquid fuel are contemporaneously admitted to the inlet-chamber 1.

. The vaporizing-ch amber above the spiderand the outer casing 15, between which is a space or jacket for a heated medium, such as the products of combustion from the engine, supplied and withdrawn through the pipes 22 and 23, respectively. The upper end of the vaporizencasing is provided with the aunular head 17, through which the mixture of fuel and air passes to the auxiliary chamber 18, which has the outlet 19, leading to. the engine.

The fuel admitted when the needle-valve 11 is uplifted falls upon the screen, which consists of two upwardly-oonvexed foraminous disks 24 of different curvature, which are separated at their central portions and united at their edges to the annular trough-shaped rim 25, which'is supported by the annular flange 26, attached to the casing 1. Said screen-disks are preferably provided with openings through which the valve 11 may freely reciprocate. It is to be understood that the upwardly-convexed form of said screen facilitates the radial distribution of the fuel which is received at its central por tion, and such portion of the fuel as is not atomized and carried up from the upper disk gravitates upon the lower disk or into the trough 25 and is absorbed therefrom by the air admitted around the valve 2. Although I prefer to form said screen of two foraminous disks separate from the valve 11 it may consist of a single foraminous disk attached to said valve, in which case the flange 26 may be omitted. y

The operation of my device is as follows: The unseating of the air-inlet valve 2 admits a strong inrush of air through the inlet-chamher and at the same time lifts the valve 11, permitting liquid fuel to drip down and distribute itself upon the screen. The inrushing air passing through this screen partially atomizes and partiall vaporizes this liquid fuel, carrying it up wit it into the vaporizingchamber, where the heat which results from its surrounding jacket completes the vaporization. of that portion of the fuel which has previously been only atomized, thus bringing l cation of the charge for the engine. I

I do not desire to limit myseli to the precise details of construction and arrangement frame 6 is surrounded by the inner shell 14 about a very effectual and complete vaporiherein set forth, as it is obvious that various modifications ma 'be' made therein without departing from t e essential features of my invention. I

x I claim 1. A vaporizer for an internal-combustion engine comprising an inlet-c ha1nber fitted with an air-inlet valve upon it. lower sioo, a liquid-fuel inlet-valve above it, and a screen mounted Within the inlet-chamber between said two valves, whereby the fuel is atomized and partially vaporized; and a jacketed vaporizing-chamber immediately above the inlet-chamber whereby the vaporization of the fuel is completed, substantially as set forth.

2. A vaporizer for an internal-combustion engine comprising an inlet-chamber having air and fuel inlet valves with a screen interposed between them and a vaporizing-chamher in juxtaposition and free communication with said inletcha1nber, with a jacket surrounding said vaporizing-chamber, in combination with means for leading the exhaust v of the engine through the jacket whereby fuel atomized in the inlet-chamber may be completely vaporized, substantially as set forth.

3. A vaporizer for an lIlIJBI'HYLl-COmbLISIlOII engine comprising air and liquid fuel inlet valves in vertical alinement with each other, the latter being uppermost, and arranged to discharge in the direction of the air-inlet valve; and a screen convexed toward the direction in which the fuel-valve discharges, interposed axially between said valves, whereby the fuel which is discharged upon it is distributed as the air is drawn-through the screen, substantially as set forth.

4. A vaporizer for an internal-combustion engine, comprising air and li. uid fuel inlet valves in vertical alinement with each other, the latter being uppermost and discharging downwardly toward the former; and a plurality of upwardly-convexed screens interposed between said two valves, substantiallyi as set forth.

5. A vaporizer for an internal combustion engine comprising airand liquid fuel inlet valves in almement with each other, the lat ter being uppermost; and, an upwardly-convexed screen interposed between said valves,

- and having an imperforate trough-shaped 7. A vaporizer for an intcrnal combustion engine comprising a needle-valve for{ the admission of fuel a screen below the seatof the needle-valve, through which a projecting end of the needle-valve extends; and, means for.

passing air upwardly through the screen, sub

stantially as set forth.

-8. In a vaporizer for an internal-combustion engine, an air-inlet valve having a conical seat; and, .a series of curved vertical defiectingplates mounted on the upper side of said valve and projecting over its-edge, sub

.stantially as set forth.

9/ In a vaporizer for an internal-combustion engine, the combination of air and fuel,

inlet valves in alinement with each other; i

and a stem adjnstably mounted Within said air-inlet valve and projecting above the same,

to engage the lower end of the fuel-inlet valve,

. whereby bv' the adjustment of said stem the extent ofthe engagement of the valves with each other may be regulated, substantially as set forth.

In testimony whereof I have: hereunto signed my name, at Philadelphia, Pennsy lvania, this 9th day of March, 1904.

JoNA'rHAN'-n...v in Witnesses:

JAMES H. BELL, E. L. FULLERTON. 

